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Dallisgrass is a warm season coarse perennial which is light green in color. The leaves are rolled in the bud, flat and wide (1/2"). Auricles are absent and the ligule is tall, pointed, and membranous. Dallisgrass has hairs on the lower portion of the leaf near the ligule.
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The seedhead contains 3 - 6 spikes, with seeds on both sides of the spike. Dallisgrass can from short thick rhizomes, but spreads upright in clumps. This highly invasive plant germinates in soil temperatures of 60 to 65 degrees F and thrives in the hot humid conditions of the southern states. Dallisgrass is found throughout humid southern United States, ranging from the mid-Atlantic states south and west to Tennessee. |
| Integrated Pest Management Control Recommendations: |
Cultural Practices:
Dallisgrass
may be physically removed by hand pulling. Avoid core aeration when seed
is germinating.
Herbicide Use:
Use a preemergent herbicide when soil temperatures become sufficiently
warm for dallisgrass germination. A preemergent herbicide is recommended
even if some dallisgrass plants have germinated; there will still be seed
in the soil and use of the preemergent herbicide can prevent further infestation.
Use an appropriate post emergent herbicide.